A cohposatiqst



Jan. 27, 1931. s. w. HYATT LAMP DOOR AND DOOR LOCK Filed March 10, 1930A TTORNEYS.

Patented Jan. 27, 1931 STATES FATE - T we SAMUEL W. HYATT, OFCONNERSVILLE, INDIANA, ASSIGNOR TO IIIIDIANA LAMP COR- PORATION, OFCONNERSVTLLE, INDIANA, A CORPORATION LAMP DOOR AND DOOR LOCK Applicationfiled March 10, 1930. Serial No. 434,580.

This invention relates to a simplified lamp construction.

The chief object of this invention is'to simplify a lamp constructionand the object is accomplished by providing interlocking connectionsbetween the door rim and'the casing of a lamp arranged so that the twoare interlockingly associated together by relative rotation and theparts are frictionally retained in an interlocking relation.

One feature of the invention in addition to the accomplishment of theforegoing object, consists in the provision of a member which not onlyserves as a closure retainer but also serves as the interlocking portionof the door construction.

The full nature of the invention will be understood from theaccompanying drawing and the following description and claims.

In the drawings, Fig. 1 is a front elevational View of a lamp embodyingthe invention.

Fig. 2 is a central view through the cas ing, rim, closure andinterlocking parts.

Fig. 3 is a front elevational view of a por tion of the casing showingthe casing interlocking parts.

In the drawings, indicates the casing of a lamp which may be of thecombination stop and tail light character. If of this character, theclosure 11 or a portion associated therewith, is provided with suitablelegending 12 and the casing includes the usual license plateilluminating insert 13. The casing includes an inwardly and forwardlydirected rim seat forming flange 14; which has an angularly and inwardlydirected flange 15. Said angularly directed flange 15 is suitablynotched or slotted as at 16 and 17 Herein said slots are shown spacedfrom each other, diametrically positioned in fact. Adjacent slot 17 is adownturned portion 18 which serves as a stop to prevent rotation of thelocking member in a counterclockwise direction. The angular flange 15has another stop 19 formed by cutting out as at 20 a portion of theflange 15 and this stop 19 serves as a means for limiting rotation ofthe locking member in a clockwise direction. The flange 15 immediatelyadjacent slot 16 includes arearwardly directed indentation 21. Theportion included between the slot 16 and the slot 20, indicated by thenumeral 22, is somewhat free relative to the casing so that it may beforcibly flexed to permit the locking member to ride over theindentation 21 and when the locking member rides over the same, it isseated be tween said indentation 21 and the lug 19.

As previously stated, lug 18 prevents reverse rotation. j

The rim 23 includes an angularly directed peripheral flange 24 at itsrear edge which is adapted to engage the inwardly and forwardly directedseat forming flange 14 of the casing. The-door rim includes the inwardlydirected portion 25 which forms asset or bear ing surface engaged byclosure ll. Extending from one side of the rim to the other is the strapportion 26. Said strap portion 26 is arranged to abut the closure 11.The closure is preferably apertured as at 27 and eX- tending through theaperture 27 and the strap 26 are the rivets 28 which anchor in parallelrelation the closure retaining locking bar 29 having the radially andoutwardly directed free ends 30. 1

Each projecting end 30 is adapted to pass longitudinally through theslot 17 until the closure bears upon' the inwardly directed flangeportion 15. The door is then rotated clockwise and the locking memberor. bar 29 ridesover the abutment 21 and engages the abutment lug orstop 19 and is thus yieldingly locked between stop 19 and the abutment21. Counterclockwise rotation, as previously set forth, is prevented bylug 18 which is formed from part of-the material removed from the rim 15to form the slot 17.

The invention claimed is:

1. In a lamp construction the combination of a door rim having anaperture therein, a closure for said aperture, locking means sup-'ported by said rim and including radiallyv directed locking projections,a casing having a rim seating inwardly directed flange terminating in aninwardly directed locking extension including spaced slots for receivingthe radially directed locking projections,

said slot spacing corresponding to the spacing of the lockingprojections, lug extending inwardly from an extension adjacent one slotfor preventing rotation of the locking projections in one direction,another lug extending inwardly from slot preventing rotation oi": alocking projection in the opposite direction an I beyond predeterminedamount determined by that spacing, and a friction lock abutmentinterposed between the last mentioned slot and stop for frictionallocking projection in door retaining position.

2. A device as defined by claim 1, characterized by the locking meansconstituting a diametrically arranged bar, the free ends of whichproject for casing locking engagement. 1 o r A device. as defined byclaim 1, characterized by the locking means constituting a diametricallyarranged bar, the free ends of which project for casing lockingengagement, said her being secured to the rim and securing the closureto the same.

e. A device as defined by claim 1, characterized by the second mentionedlu being formed from the inward extension slotting the same, said lastmentioned slotting being adjacent one of the projections recei ing theslots, thereby forming an isolatedtongue p rtion from the extension,said tongue portion including the said friction loci: abutment. V I

5. A device as defined by claim 1, characterized by the second mentionedlug being formed from the inward extension by slotting the same, saidlast mentioned slotting being adjacent one of the projections receivingthe slots, thereby forming an isolated tongue portion from theextension, said tongue portion including the said friction lockabutment, said locking means comprising a diametrically arranged bar,the outwardly projecting ends of Which constitute the slot receivableportions, said bar being secured to said'rim with the closure interposedtherebetween for closure anchorage to the rim.

In itness whereof, I have hereunto atfixed my signature.

SAMUEL W. I-IYATT.

